Home TYRES & THE TRIALS CAR by Grant Campbell

Click on an image for enlargement & further explanation

Trials Car Tyres are just as important to the performance of the car as in any other form of motor sport. Even though our rules say that they need to be road tyres, and any aggressive pattern is likely not to be approved, the compound and pattern are all important. Front engined cars are allowed to run flat tyres, which is a huge advantage, although this tends to shred them somewhat so a nice tyre is still important.

All trials tyres seem to last for about three seasons, at which time the leading edges wear off - reverse them halfway through the season for better grip.

I can't remember whether I ever had any Michelin ZX tyres, but these XZX were pretty much the standard before front engined cars were allowed to run zero pressure. I reckoned they were goodo, popular, relatively inexpensive and good for about three seasons. I don't think it would take much reseach to find that the tiny little cuts or 'sypes' in these and other tyres are the key to wet weather performance.